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Voltage distortion mitigation in a distributed generation-integrated weak utility network via a self-tuning filter-based dynamic voltage restorer

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Abstract

The dynamic voltage restorer (DVR) is mainly used in a utility grid to protect sensitive loads from power quality problems, such as voltage sags and swells. However, the effectiveness of the DVR can wane under unbalanced grid voltage conditions. Recently, DVR control algorithms have been developed that enable the elimination of voltage harmonics in weak and distorted utility networks. This paper presents a modified control method for the DVR, which can (1) compensate the voltage swell and (2) eliminate the voltage harmonics in a combined utility condition consisting of voltage unbalance and harmonic distortion. A self-tuning filter (STF) is used along with the pq control method to increase the control performance of the DVR. One of the advantages of STF is that it eliminates the need to have multiple filters as part of the control method, and thus reduces the controller complexity. Analysis of the fault ride-through capability of the new DVR revealed an improvement in the voltage stability offered to distributed generation-integrated weak utility networks. The proposed DVR control method is modeled in MATLAB/Simulink and tested in both off-line and real-time environments using the OPAL RT real-time platform. Results are then presented as a verification of the proposed system.

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Authors and Affiliations

  1. School of Electrical and Electronic Engineering, Dublin Institute of Technology, Dublin, Ireland

    Samet Biricik & Malabika Basu

  2. Department of Electrical and Electronic Engineering, European University of Lefke, Mersin 10, Turkey

    Samet Biricik & Soydan Redif

  3. International Energy Research Centre, Tyndall National Institute, Dyke Parade, Cork, Ireland

    Shafiuzzaman K. Khadem

Authors
  1. Samet Biricik
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  2. Shafiuzzaman K. Khadem
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  3. Soydan Redif
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  4. Malabika Basu
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Correspondence to Samet Biricik.

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Biricik, S., Khadem, S.K., Redif, S. et al. Voltage distortion mitigation in a distributed generation-integrated weak utility network via a self-tuning filter-based dynamic voltage restorer. Electr Eng 100, 1857–1867 (2018). https://doi.org/10.1007/s00202-017-0666-4

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  • DOI: https://doi.org/10.1007/s00202-017-0666-4

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